Sofa



FIG. 1 is a front view of the sofa showing the new design;

FIG. 2 is a back view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a right perspective view thereof;

FIG. 8 is a left perspective view thereof;

FIG. 9 is a right perspective view thereof in an upright position:

FIG. 10 is a left perspective view thereof in an upright position;

FIG. 11 is a right perspective view of the sofa in an upright positionwith arm elements removed; and,

FIG. 12 is a left perspective view of the sofa in an upright positionwith arm elements removed.

The ornamental design for a sofa, as shown and described.